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5 Written questions

5 Matching questions

  1. Open System
  2. Fuel
  3. Catalyst
  4. Fire Triangle
  5. Chemical Reaction
  1. a Oxygen,Fuel,Heat
  2. b Matter can enter or escape to the surroundings
  3. c A material that releases energy when it burns
  4. d A material that increases the rate of a reaction by lowering the activation energy
  5. e A change in matter that produces one ore more new substances

5 Multiple choice questions

  1. The number placed in front of a chemical formula in an equation
  2. A characteristic of a substance into another substance
  3. Matter is not allowed to enter or leave
  4. A material used to decrease the rate of a reaction
  5. A reaction in which one element replaces another in a compound, or when two elements in different compounds trade places.

5 True/False questions

  1. MatterAnything that has mass and takes up space


  2. Chemical EquationA change in matter that produces one ore more new substances


  3. The Basic ingredient in a FireworkStar Pellet


  4. What silly name helps you remember the diatomicsAerial shells/charges


  5. ConcentrationThe amount of a substance in a given volume


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